#ifndef _A_H_
#define _A_H_

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Books
{
	char title[50];
	char author[50];
	char subject[100];
	int book_id;
};

void My_Struct_Init(void);//结构体初始化

extern struct Books book1, book2;

#endif